If you have created a curve that you could use on another design, it is a good idea to save it so that you can transfer it to another Gamma Window. There are two ways of saving and opening curves.

You can either save them as individual curves or as a group of curves. In the action menu at the bottom of the Gamma Window, there is an option to ‘Save All’ which lets you to save all of the curves currently displayed in the Gamma Window as a complete set.

To open a set of saved curves you must open them through the action menu.

To save an individual gamma curve, hold down ^ (control key)  on your keyboard and click on the curve to open the contextual menu. The Save and Open options in the menu apply to the specific curve that you have the contextual menu displayed on. You can only open an individual curve through the contextual menu and not through the action menu (which is used to load sets of curves as explained above).